cmm

#### Circle Basic Scan - Wireframe Data Method

You can also use wireframe CAD data to generate a circular scan.

To generate a circle:

- Click near the desired wire on the circle. PC-DMIS highlights the selected wire.

- Verify that the correct feature has been selected.

The BASICSCAN dialog box (Insert | Scan | Circle) displays the values of the selected circle's center point and diameter once the wire has been indicated.

If the underlying CAD element is not a circle or an arc, additional clicks may be necessary to identify the feature. If PC-DMIS does not highlight the correct feature, try to click on at least two additional points near the circle.

- The CutVec is taken from the plane in which the circle lies. This comes from the wireframe CAD model.

- The InitVec is arbitrarily set from the wireframe CAD model. If the circle lies in the Y or Z plane, it is -X if it is an inner circle. It is +X if it is an outer circle.
  If the circle lies in the X plane, it is +Z if it is an inner circle. It is -Z if it is an outer circle.

For more information about the BASICSCAN dialog box and the circle basic scan, see "Performing a Circle Basic Scan".